feat: implement v2 3-tier architecture (mcpctl → mcplocal → mcpd)

- Rename local-proxy to mcplocal with HTTP server, LLM pipeline, mcpd discovery
- Add LLM pre-processing: token estimation, filter cache, metrics, Gemini CLI + DeepSeek providers
- Add mcpd auth (login/logout) and MCP proxy endpoints
- Update CLI: dual URLs (mcplocalUrl/mcpdUrl), auth commands, --direct flag
- Add tiered health monitoring, shell completions, e2e integration tests
- 57 test files, 597 tests passing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cli/tests/e2e/cli-commands.test.ts

@@ -12,6 +12,8 @@ describe('CLI command registration (e2e)', () => {
 
     expect(commandNames).toContain('config');
     expect(commandNames).toContain('status');
+    expect(commandNames).toContain('login');
+    expect(commandNames).toContain('logout');
     expect(commandNames).toContain('get');
     expect(commandNames).toContain('describe');
     expect(commandNames).toContain('instance');